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Related Experiment Video

Updated: Mar 22, 2026

A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats
05:34

A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats

Published on: May 20, 2019

8.5K

Knee joint distraction compared with high tibial osteotomy: a randomized controlled trial.

J A D van der Woude1,2, K Wiegant2, R J van Heerwaarden1

  • 1Limb and Knee Reconstruction Unit, Department of Orthopedic Surgery, Maartenskliniek Woerden, Woerden, The Netherlands.

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
|April 24, 2016
PubMed
Summary

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Joint distraction versus custom-made unloading orthosis for knee osteoarthritis - A clinical and radiological study.

The Knee·2025

Knee joint distraction and high tibial osteotomy (HTO) both improve knee osteoarthritis outcomes. Knee distraction showed greater improvement in joint space width, suggesting it may be a viable alternative treatment.

Area of Science:

  • Orthopedics
  • Regenerative Medicine
  • Biomechanical Engineering

Background:

  • Knee osteoarthritis (OA) is a prevalent degenerative joint disease.
  • Knee-preserving treatments like knee joint distraction and high tibial osteotomy (HTO) are emerging options for medial knee OA.
  • Comparative efficacy data between these two knee-preserving interventions is limited.

Purpose of the Study:

  • To compare the efficacy of knee joint distraction versus valgus-producing opening-wedge high tibial osteotomy (HTO) in patients with medial knee OA.
  • To evaluate patient-reported outcome measures (PROMs) and joint space width (JSW) changes over 12 months.

Main Methods:

  • A randomized controlled trial (Level I evidence) involving 69 patients with medial knee OA and varus deviation (<10°).
Keywords:
Cartilage repairHigh tibial osteotomyJoint distractionKnee osteoarthritis

Related Experiment Videos

Last Updated: Mar 22, 2026

A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats
05:34

A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats

Published on: May 20, 2019

8.5K
  • Patients were randomized to either knee joint distraction (n=23) or HTO (n=46).
  • PROMs were assessed at baseline and 3, 6, and 12 months; JSW was measured radiographically at baseline and 1-year follow-up.

    • Main Results:

    • Both groups showed significant improvements in PROMs and JSW at 1 year (p < 0.02).
    • The HTO group demonstrated slightly greater improvement in 4 out of 16 PROMs (p < 0.05).
    • Knee joint distraction led to a significantly greater increase in minimum medial compartment JSW (0.8 mm vs. 0.4 mm, p = 0.05) and mean JSW in the lateral compartment compared to HTO.

    Conclusions:

    • Both knee joint distraction and HTO promote cartilaginous repair and improve clinical outcomes in medial knee OA.
    • Knee joint distraction may serve as an effective alternative therapy for medial compartmental OA, particularly in cases with limited mechanical leg malalignment.